There are a few reasons this may happen, 1) You're having connection issues - Check your Wi-Fi 2) The server may be down - Try fly on a different server 3) You have been ghosted or reported - If this is on advanced, wait 24hrs, if on Playground, wait 1hr. If it's none of these, try restarting your device, if it doesn't work after that, delete and re-install the app. Hope I've helped!